| 摘要 |
A water dispenser is provided in which a long service life of a pump can be secured, even if sterilization operation is performed frequently. This water dispenser includes: a heater (30) configured to heat drinking water in a hot water tank (7); a circulation route (19) configured such that drinking water can be circulated through the circulation route (19) by way of the hot water tank (7); a pump (6) provided in an intermediate portion of the circulation route (19); and a control device (41). The control device (41) is configured, when a sterilization operation is performed, to concurrently carry out: a heater control in which the heater (30) is turned on when the temperature in the hot water tank (7) falls below a lower limit temperature (L), and the heater (30) is turned off when the temperature in the hot water tank (7) is increased to reach an upper limit temperature (H); and an intermittent pump drive control in which a first operation in which the pump (6) is maintained in a deactivated state while the temperature in the hot water tank (7) is lower than the lower limit temperature (L) is performed alternately with a second operation in which the pump (6) is driven continuously for a predetermined period of time (T) when the temperature in the hot water tank (7) is increased to reach the lower limit temperature (L) by the heater control. |
